From patchwork Sun Oct 20 14:56:14 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Samuel Thibault X-Patchwork-Id: 284993 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 1E23C2C011F for ; Mon, 21 Oct 2013 02:01:31 +1100 (EST) Received: from localhost ([::1]:36406 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VXuVV-0000Wt-7i for incoming@patchwork.ozlabs.org; Sun, 20 Oct 2013 11:01:29 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59385) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VXuRn-0004E3-AZ for qemu-devel@nongnu.org; Sun, 20 Oct 2013 10:57:45 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1VXuRf-0007cg-IL for qemu-devel@nongnu.org; Sun, 20 Oct 2013 10:57:39 -0400 Received: from toccata.ens-lyon.org ([140.77.166.68]:33587) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VXuRf-0007ca-8V for qemu-devel@nongnu.org; Sun, 20 Oct 2013 10:57:31 -0400 Received: from localhost (localhost [127.0.0.1]) by toccata.ens-lyon.org (Postfix) with ESMTP id A9A75840AE; Sun, 20 Oct 2013 16:57:30 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at toccata.ens-lyon.org Received: from toccata.ens-lyon.org ([127.0.0.1]) by localhost (toccata.ens-lyon.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id PYFjsbQ9PwFv; Sun, 20 Oct 2013 16:57:30 +0200 (CEST) Received: from type.ipv6 (unknown [37.161.244.223]) (using TLSv1 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by toccata.ens-lyon.org (Postfix) with ESMTPSA id 49C33840B0; Sun, 20 Oct 2013 16:56:55 +0200 (CEST) Received: from samy by type.ipv6 with local (Exim 4.80) (envelope-from ) id 1VXuQg-0005ek-Q5; Sun, 20 Oct 2013 16:56:30 +0200 From: Samuel Thibault To: qemu-devel@nongnu.org Date: Sun, 20 Oct 2013 16:56:14 +0200 Message-Id: <1382280980-21676-10-git-send-email-samuel.thibault@ens-lyon.org> X-Mailer: git-send-email 1.8.4.rc3 In-Reply-To: <1382280980-21676-1-git-send-email-samuel.thibault@ens-lyon.org> References: <20131020145406.GA17618@type> <1382280980-21676-1-git-send-email-samuel.thibault@ens-lyon.org> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.4.x-2.6.x [generic] X-Received-From: 140.77.166.68 Cc: Samuel Thibault , Guillaume Subiron Subject: [Qemu-devel] [PATCH 10/16] slirp: Adding IPv6 UDP support X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org This patch adds udp6_input() and udp6_output(). It also adds the IPv6 case in sorecvfrom(). Finally, udp_input() is called by ip6_input(). Signed-off-by: Guillaume Subiron --- slirp/Makefile.objs | 2 +- slirp/ip6_input.c | 3 +- slirp/socket.c | 7 ++- slirp/udp.h | 5 ++ slirp/udp6.c | 149 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 162 insertions(+), 4 deletions(-) create mode 100644 slirp/udp6.c diff --git a/slirp/Makefile.objs b/slirp/Makefile.objs index 2dfe8e0..faa32b6 100644 --- a/slirp/Makefile.objs +++ b/slirp/Makefile.objs @@ -1,3 +1,3 @@ common-obj-y = cksum.o if.o ip_icmp.o ip6_icmp.o ip6_input.o ip6_output.o ip_input.o ip_output.o dnssearch.o common-obj-y += slirp.o mbuf.o misc.o sbuf.o socket.o tcp_input.o tcp_output.o -common-obj-y += tcp_subr.o tcp_timer.o udp.o bootp.o tftp.o arp_table.o ndp_table.o +common-obj-y += tcp_subr.o tcp_timer.o udp.o udp6.o bootp.o tftp.o arp_table.o ndp_table.o diff --git a/slirp/ip6_input.c b/slirp/ip6_input.c index af098a5..3290af8 100644 --- a/slirp/ip6_input.c +++ b/slirp/ip6_input.c @@ -62,8 +62,7 @@ void ip6_input(struct mbuf *m) icmp6_send_error(m, ICMP6_UNREACH, ICMP6_UNREACH_NO_ROUTE); break; case IPPROTO_UDP: - /* :TODO:maethor:130312: UDP */ - icmp6_send_error(m, ICMP6_UNREACH, ICMP6_UNREACH_NO_ROUTE); + udp6_input(m); break; case IPPROTO_ICMPV6: icmp6_input(m); diff --git a/slirp/socket.c b/slirp/socket.c index f333fcf..31bbb7e 100644 --- a/slirp/socket.c +++ b/slirp/socket.c @@ -540,8 +540,13 @@ sorecvfrom(struct socket *so) (struct sockaddr_in *) &daddr, so->so_iptos); break; - default: + case AF_INET6: + udp6_output(so, m, (struct sockaddr_in6 *) &saddr, + (struct sockaddr_in6 *) &daddr); break; + default: + assert(0); + break; } } /* rx error */ } /* if ping packet */ diff --git a/slirp/udp.h b/slirp/udp.h index 15e73c1..8a4d9f5 100644 --- a/slirp/udp.h +++ b/slirp/udp.h @@ -83,4 +83,9 @@ struct socket * udp_listen(Slirp *, uint32_t, u_int, uint32_t, u_int, int udp_output(struct socket *so, struct mbuf *m, struct sockaddr_in *saddr, struct sockaddr_in *daddr, int iptos); + +void udp6_input(register struct mbuf *); +int udp6_output(struct socket *so, struct mbuf *m, + struct sockaddr_in6 *saddr, struct sockaddr_in6 *daddr); + #endif diff --git a/slirp/udp6.c b/slirp/udp6.c new file mode 100644 index 0000000..3940959 --- /dev/null +++ b/slirp/udp6.c @@ -0,0 +1,149 @@ +/* + * Copyright (c) 2013 + * Guillaume Subiron + * + * Please read the file COPYRIGHT for the + * terms and conditions of the copyright. + */ + +#include "slirp.h" +#include "udp.h" + +void udp6_input(struct mbuf *m) +{ + Slirp *slirp = m->slirp; + struct ip6 *ip, save_ip; + struct udphdr *uh; + int hlen = sizeof(struct ip6); + int len; + struct socket *so; + struct sockaddr_storage lhost; + + DEBUG_CALL("udp6_input"); + DEBUG_ARG("m = %lx", (long)m); + + if (slirp->restricted) { + goto bad; + } + + ip = mtod(m, struct ip6 *); + m->m_len -= hlen; + m->m_data += hlen; + uh = mtod(m, struct udphdr *); + m->m_len += hlen; + m->m_data -= hlen; + + if (ip6_cksum(m)) { + goto bad; + } + + len = ntohs((uint16_t)uh->uh_ulen); + + /* + * Make mbuf data length reflect UDP length. + * If not enough data to reflect UDP length, drop. + */ + if (ntohs(ip->ip_pl) != len) { + if (len > ntohs(ip->ip_pl)) { + goto bad; + } + m_adj(m, len - ntohs(ip->ip_pl)); + ip->ip_pl = htons(len); + } + + /* TODO handle DHCP/BOOTP */ + /* TODO handle TFTP */ + + /* Locate pcb for datagram. */ + lhost.ss_family = AF_INET6; + ((struct sockaddr_in6 *)&lhost)->sin6_addr = ip->ip_src; + ((struct sockaddr_in6 *)&lhost)->sin6_port = uh->uh_sport; + + so = solookup(&slirp->udp_last_so, &slirp->udb, &lhost, NULL); + + if (so == NULL) { + /* If there's no socket for this packet, create one. */ + so = socreate(slirp); + if (!so) { + goto bad; + } + if (udp_attach(so, AF_INET6) == -1) { + DEBUG_MISC((dfd, " udp6_attach errno = %d-%s\n", + errno, strerror(errno))); + sofree(so); + goto bad; + } + + /* Setup fields */ + so->so_lfamily = AF_INET6; + so->so_laddr6 = ip->ip_src; + so->so_lport6 = uh->uh_sport; + } + + so->so_ffamily = AF_INET6; + so->so_faddr6 = ip->ip_dst; /* XXX */ + so->so_fport6 = uh->uh_dport; /* XXX */ + + hlen += sizeof(struct udphdr); + m->m_len -= hlen; + m->m_data += hlen; + + /* + * Now we sendto() the packet. + */ + if (sosendto(so, m) == -1) { + m->m_len += hlen; + m->m_data -= hlen; + *ip = save_ip; + DEBUG_MISC((dfd, "udp tx errno = %d-%s\n", errno, strerror(errno))); + /* :TODO:maethor:130313: ICMPv6 error */ + /*icmp_error(m, ICMP_UNREACH,ICMP_UNREACH_NET, 0,strerror(errno));*/ + goto bad; + } + + m_free(so->so_m); /* used for ICMP if error on sorecvfrom */ + + /* restore the orig mbuf packet */ + m->m_len += hlen; + m->m_data -= hlen; + *ip = save_ip; + so->so_m = m; + + return; +bad: + m_free(m); +} + +int udp6_output(struct socket *so, struct mbuf *m, + struct sockaddr_in6 *saddr, struct sockaddr_in6 *daddr) +{ + struct ip6 *ip; + struct udphdr *uh; + + DEBUG_CALL("udp6_output"); + DEBUG_ARG("so = %lx", (long)so); + DEBUG_ARG("m = %lx", (long)m); + + /* adjust for header */ + m->m_data -= sizeof(struct udphdr); + m->m_len += sizeof(struct udphdr); + uh = mtod(m, struct udphdr *); + m->m_data -= sizeof(struct ip6); + m->m_len += sizeof(struct ip6); + ip = mtod(m, struct ip6 *); + + /* Build IP header */ + ip->ip_pl = htons(m->m_len - sizeof(struct ip6)); + ip->ip_nh = IPPROTO_UDP; + ip->ip_src = saddr->sin6_addr; + ip->ip_dst = daddr->sin6_addr; + + /* Build UDP header */ + uh->uh_sport = saddr->sin6_port; + uh->uh_dport = daddr->sin6_port; + uh->uh_ulen = ip->ip_pl; + uh->uh_sum = 0; + uh->uh_sum = ip6_cksum(m); + + return ip6_output(so, m, 0); +}